[1.4>2.0] Revert change made when encoding large constant for Wasm bug as it has a big perf impact.
[1.4>2.0] Revert change made when encoding large constant for Wasm bug as it has a big perf impact.

Microsoft/ChakraCore,mrkmarron/ChakraCore,Microsoft/ChakraCore,Microsoft/ChakraCore,mrkmarron/ChakraCore,Microsoft/ChakraCore,mrkmarron/ChakraCore,Microsoft/ChakraCore,Microsoft/ChakraCore,mrkmarron/ChakraCore,mrkmarron/ChakraCore,mrkmarron/ChakraCore,mrkmarron/ChakraCore